Make perf_regression_sheriffing.md up to date
Make perf_regression_sheriffing.md up to date

BUG=n/a

Review URL: https://codereview.chromium.org/1728933004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#378396}

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